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Diffstat (limited to 'include/hw/i386/sgx-epc.h')
-rw-r--r-- | include/hw/i386/sgx-epc.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/hw/i386/sgx-epc.h b/include/hw/i386/sgx-epc.h new file mode 100644 index 000000000..a6a65be85 --- /dev/null +++ b/include/hw/i386/sgx-epc.h @@ -0,0 +1,67 @@ +/* + * SGX EPC device + * + * Copyright (C) 2019 Intel Corporation + * + * Authors: + * Sean Christopherson <sean.j.christopherson@intel.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#ifndef QEMU_SGX_EPC_H +#define QEMU_SGX_EPC_H + +#include "hw/i386/hostmem-epc.h" + +#define TYPE_SGX_EPC "sgx-epc" +#define SGX_EPC(obj) \ + OBJECT_CHECK(SGXEPCDevice, (obj), TYPE_SGX_EPC) +#define SGX_EPC_CLASS(oc) \ + OBJECT_CLASS_CHECK(SGXEPCDeviceClass, (oc), TYPE_SGX_EPC) +#define SGX_EPC_GET_CLASS(obj) \ + OBJECT_GET_CLASS(SGXEPCDeviceClass, (obj), TYPE_SGX_EPC) + +#define SGX_EPC_ADDR_PROP "addr" +#define SGX_EPC_SIZE_PROP "size" +#define SGX_EPC_MEMDEV_PROP "memdev" + +/** + * SGXEPCDevice: + * @addr: starting guest physical address, where @SGXEPCDevice is mapped. + * Default value: 0, means that address is auto-allocated. + * @hostmem: host memory backend providing memory for @SGXEPCDevice + */ +typedef struct SGXEPCDevice { + /* private */ + DeviceState parent_obj; + + /* public */ + uint64_t addr; + HostMemoryBackendEpc *hostmem; +} SGXEPCDevice; + +/* + * @base: address in guest physical address space where EPC regions start + * @mr: address space container for memory devices + */ +typedef struct SGXEPCState { + uint64_t base; + uint64_t size; + + MemoryRegion mr; + + struct SGXEPCDevice **sections; + int nr_sections; +} SGXEPCState; + +bool sgx_epc_get_section(int section_nr, uint64_t *addr, uint64_t *size); + +static inline uint64_t sgx_epc_above_4g_end(SGXEPCState *sgx_epc) +{ + assert(sgx_epc != NULL && sgx_epc->base >= 0x100000000ULL); + + return sgx_epc->base + sgx_epc->size; +} + +#endif |